Spark arrester



Sept. 24, 1935. v. RICHARD 2,015,367

SPARK ARRESTER Filed May 29, 1955 Patented Sept. 24, 1935 SPARK ARRESTER- Victor Richard, Wentworth County, Ontario, Canada This invention relates to improvements in spark arresters for the exhaust of explosion or internal combustion engines, consisting essentially of a jacketed combined water sump and chamber, the latter communicating with the extremity of the engine exhaust translating device and including exhaust escape fines, and an arcuate or vaulted defiector baffle for directing the exhaust to the water surface.

The principal object of the invention is to generally improve upon devices for the purpose of arresting sparks which are sometimes discharged into the atmosphere with the exhaust gases from explosion engines.

An important object of the invention is to provide means in a device for the purpose specified for extinguishing all sparks and flame accompanying the exhaust gases before they reach the outer atmosphere, by means of water.

Another important object of the invention is to provide means for appreciably cooling the exhaust gases before they reach the outer atmosphere.

Still another important object is to provide a device of the kind described which will be simple, durable, efiective in its purpose, and inexpensive to produce.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawing and specifically claimed.

In the accompanying drawing like characters of reference indicate like parts in the several views, and:

Figure 1 is a side elevation of a spark arrester as constructed in accordance with this invention;

Figure 2 is an end elevation of Figure 1;

Figure 3 is a median cross-sectional side elevation taken on the line 3-3 of Figure 2;

Figure 4 is a cross-sectional end elevation taken on the line 6- 3 of Figure 3.

In its present embodiment the invention consists of a combined water sump it and gas receiving chamber H comprising the bottom plate [2, top plate 53, end plates M and side plates l5. This structure is surrounded except at the bottom by a spaced jacket consisting of side plates it, end plates I? and a gable cover plate it. Thus there is a circulation of air between the chamber i and the jacket whereby the outer surface of the device is rendered relatively cool as compared to the chamber l l which becomes hot under the influence of the hot gases received thereby. In

the lateral plates i5 of the jacket, are screened openings it for the inducement of such circulation.

Communication from the chamber M to the atmosphere is provided by means of end fiues 2t] 5 and top flues 2 i and all these fiues are preferably screened as at 22 and 23, respectively, in order to exclude extraneous matter from the chamber and yet provide unobstructed passages for the exhaust gases. 10

The present invention is particularly designed for stationary explosion engines for use in barns and other places where the fire hazard is high. In stationary internal combustion engines the exhaust gas translating device, which is usually in the form of a tubular flue, in most instances is directed upwardly; at least the termination of the fiue is vertical.

The end portion of this exhaust flue, as indicated by 2a, is shown as extending upwardly through the bottom plate i2 and terminating at a point well above the normal water level 2% of the sump. Thus the exhaust gases are vertically expelled directly into the chamber l Spaced above the termination of the exhaust flue 2% fully athwart the chamber i i is a vaulted deflector baffle 25. In cross section this bailie is preferably in the form of a truncated cardioid with the groin 26 directly above the mouth of the exhaust flue 2 3 as illustrated, although it is to be 30 understood that any arcuately profiled bathe, particularly with inturned devexities 2?, will similarly serve the purpose to be defined as the description proceeds.

The exhaust fumes or gases as represented by the arrows in Figure 3 obviously strike the vaulted faces of the baflie 25, being equally divided by the ridge 28 opposed to the groin 26 whereby the gases are divided and oppositely directed. It is evident that the gases are thence deflected by means of the inturned devexities 2'! directly to the surface of the water whereby it is apparent that all sparks or flame accompanying the fumes will be immedi ately extinguished. Since the inturned devexities of the baiile terminate close above the water surface and considering the natural impetus of an explosion engine exhaust there is obviously no conceivable opportunity for any sparks or flame to be unquenched before the gases pass out to the atmosphere first through the intervals between the terminations of the baflie and the water surface and thence through the flues 26.

On the end of a pipe 29 extending from the water sump ill to the outside is a filler bowl 38 which is also used combiningly as a sight gauge,

and a drainage valve 3! is disposed in any approved position.

There has thus been provided a simple and. eificient device of the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described, but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

In a device of the class described, in combination with an exhaust flue, of a combined exhaust gas receiving chamber and water sump, said chamber being in communication with the mouth of said flue, a spaced jacket on said chamber, exhaust gas escape fiues extending from said chamber through said jacket to the outside, means in said chamber adapted to deflect the flow of exhaust gas from the mouth of said exhaust flue to the surface of the Water in said sump in a di- 10 rection away from said escape flues.

VICTOR RICHARD. 

